Pipe working tool assembly

ABSTRACT

A portable power tool assembly for pipe working and the like, has a longitudinal driving means drivingly engaged on one end thereof by a power driven longitudinally aligned assembly having a pair of aligned motors, a spaced longitudinally aligned chuck assembly driven on the other end of the longitudinal driving means, said chuck assembly including a pair of spaced aligned chucks and a gear therebetween, a movable housing carrying a longitudinally aligned cutting die assembly, said power driven assembly being carried on one side of the cutting die assembly and the chuck assembly being carried on the other side, and means discharging oil upon the dies through the die housing, so that a unitary power tool assembly is longitudinally driven to minimize size and enhance the range of its usefulness.

l fite iii [72] inventor Joe A. Ivester 62 Rock Creek Drive, Greenville,SC. 29601 [21] Appl. No. 870,455 [22] Filed Oct. 17, 1969 [45] PatentedJan. 4, 1972 [54] PIPE WORKING TOOL ASSEMBLY 2 Claims, 5 Drawing Figs.

[52] US. Cl 10/89, 10/107 [51] Int. Cl. B23g l/00, 823g 1/22, 823g H24[50] Field of Search ..10/89, 89 P, 87,105, 106, 107; 82/2, 2.5

[5 6] References Cited UNITED STATES PATENTS 1,852,186 4/1932 Nonneman10/89 2,614,435 10/1952 Chasar 10/106 2,692,996 11/1954 Wallace... 10/106 2,709,822 6/1955 Marsden 10/106 2,768,550 10/1956 lngwcr et al. 10/I 06 2,887,886 5/1959 Chasar et al, 10/89 2,916,749 12/1959 lngwer eta1. l0/l06 3,274,627 9/1966 Behnke 10/106 Primary ExaminerCharles W.Lanham Assistant Examiner-E. M. Combs Attorney-Bailey and DorityABSTRACT: A portable power tool assembly for pipe working and the like,has a longitudinal driving means drivingly engaged on one end thereof bya power driven longitudinally aligned assembly having a pair of alignedmotors, a spaced longitudinally aligned chuck assembly driven on theother end of the longitudinal driving means, said chuck assembly includ-PATENTED JAN 4 I972 SHEET 1 OF 2 INVENTOR.

Joe A. IVESTER BY r ATTORNEYS.

PATENTED JAN 4 I972 SHEET 2 BF 2 INVENTOR.

Joe A. IVESTER ATTORNEYS.

' PIPE WORKING TOOL ASSEMBLY This invention relates to a portable powertool assembly for working pipes and the like, providing a die headassembly and the like, with a pair of motors carried on one side thereofdriving a chuck assembly carried on the other side for conserving spaceand facilitating portability.

Pipe and bolt threading devices have been formerly provided in the formof self-contained assemblies suitable for accommodating relatively smallpipes and bolts and the like. Devices, such as die head assemblies, havebeen provided for accommodating larger workpieces, but such have notbeen provided with conveniently positioned driving or mounting means. Ithas formerly been necessary to mount such die heads, such as uponthree-stand vices, and to employ a driving connection including auniversal joint for connecting same to a separate driving unit. It hasalso been necessary to place a separate oil pan to collect oil,discharged from a separate means upon the workpiece and cutting dies,when employing such die heads.

This is an improvement upon the invention of my US. Pat. No. 3,332,095upon which a reissue application bearing Ser. No. 848,760 was filed July15, I969, now U.S. Pat. No. Re 27,127, which discloses a device solvingsome of these problems,

An important object of this invention is to provide an improved portablepower tool assembly capable ofworking upon workpieces ofa variety ofsizes.

Another object of the invention is to provide improved means dischargingoil upon the workpiece during a cutting operation, reducing wear on thecutting parts, as well as reducing power requirements of the entireassembly.

Another very important object of the invention is the provision ofamovable die head with improved direct driving means from a power drivenassembly in alignment therewith.

Other important objects of the invention include the provision of meanslubricating the workpiece through the die housing, and an improveddouble chuck assembly.

The invention contemplates an improved power driven assembly includingtwo aligned motors for driving a double chuck assembly, with a dieassembly positioned intermediate the power driven assembly and chuckassembly with means lubricating the dies through their housing member.

The construction designed to carry out the invention will be hereinafterdescribed, together with other features thereof.

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompanying drawingsforming a part thereof, wherein an example of the invention is shown andwherein:

FIG. 1 is a side elevation illustrating a pipe working tool assemblyconstructed in accordance with the invention,

FIG. 2 is atop plan view further illustrating the assembly,

FIG. 3 is a longitudinal sectional elevation taken on the line 33 inFIG. 2,

FIG. 4 is a diagrammatic illustration of the hydraulic componentsutilized in the assembly, and

FIG. 5 is a diagrammatic illustration of the electrical componentsutilized in the assembly.

The drawings illustrate a portable power tool assembly for pipe workingand the like, having a platform A carrying a housing B. The housing Bhas a longitudinal pivotal mounting C (FIG. 2) carried by the platformadjacent the rear of the housing. A chuck assembly D is-carried by theplatform A. The assembly D has a pair of spaced aligned chucks, and agear for driving same positioned therebetween. Means E includes ahousing having a passageway therein, conducting lubricant to theworkpiece closely adjacent the dies. A flexible line carries oil and thelike to passageways for delivery to the die and workpiece. An oil pan Fis carried by the platform in fixed relation thereto beneath the housingfor collecting oil discharged upon the dies and'pipe. A reservoir Greceives oil from the oil pan and a pump means H feeds oil from thereservoir to the passageway E. A power driven longitudinally spacedaligned assembly I constitutes a driving means having a pair of motorscarried by said platform. A drive shaft 1 constitutes a longitudinaldriving means and has means connecting it to the power driven assembly.The housing B carries a longitudinally aligned cutting die assembly onthe platform between the chuck assembly D and the power driven assemblyI. Gear means couple the power driven assembly I and the chuck assemblyD to the drive shaft -.l adjacent respective ends thereof.

The platform A includes front and rear sides 10a and 10h, respectively,and end members Ila and llb and a bottom portion 12. The platform has anoutwardly extending edge portion 13 extending entirely thereabout, andis partially covered by a sheet metal portion 14. The platform hastransversely spaced supporting wheels 17 and a.pair of legs 18 extendingoutwardly so as to form a suitable base support.

A die head or cutting die assembly includes the housing 8 which has thepivotal mounting C (FIG. 2). The die head is supported upon the leg 31when in operable or forward position for pipe threading, and has ahandle 32 for raising the housing B transversely to an inoperable orrearward position, as when using another cutting die, such as carried bythe usual cutting assembly 33 or the reamer 34. A suitable die head isillustrated as a Quadra-Type 2 /2 to 4 inch by Toledo-Beaver ToolsCompany, Division of Curtis Mfg, Co., P. O. Box I689, Toledo, Ohio43603.

Means E is provided for discharging oil and the like upon the threadingdies 26 and the workpiece W, shown in broken lines in FIG. 1, as forexample, during a thread cutting operation for lubricating and carryingaway metal cuttings. The means E includes an elongated flexible tube 37and passageways 40. The housing B which carries the threading dies 26 ofthe cutting die assembly adjacent the inner periphery thereof, haspassageways 40 (FIGS. 2 and 4) therein for carrying oil for dischargeupon the dies and workpiece closely adjacent the dies. The tubularmember 37 may also be so positioned rearwardly into a retired orinoperable position. The passageways 40 originate adjacent the outerperiphery of the housing B and terminate closely adjacent the dies onthe inner periphery of the housing B. As shown in FIGS. 2 and 4, thepassageways 40 extend radially in a transverse plane.

An oil pan F is carried by the platform A beneath the housing B, when inforward or operating position, for collecting oil discharged upon thedies 26 and pipe workpiece W as during a thread cutting operation. Areservoir G receives oil from the oil pan F through apertures 45therein. A pump H is driven by gears 55 (FIGS. 2 and 3).

The housing B, the cutting assembly 33, and the reamer are mounted uponthe platform A upon a movable frame 38, which is carried upon the spacedbars 39, and moved by the rack and pinion arrangements 39a by turningthe handle 39b.

The operation of the electrical and hydraulic components might best beunderstood by reference to FIGS. 4 and 5. A source of electric power(preferably 1 l5v.) is provided for the operation of transverselyaligned motors 46 and 47 of the assembly l, which operates throughsuitable gearing 55 to I operate the pump H. The motors are preferably ll5v. drilltype (plug-in) and have suitable mounting upon the platform Ain a portion separated by the partition 15. The partition 15a supportsthe reservoir G. The pump H pumps oil through a suitable selector valve49 to the means E through the line 37. Since the pump H does not stop solong as the motors are running, it is important that the oil bepermitted to flow at all times. The valve 49 is manually operablepermitting oil to flow through the line 49a as when the housing B is inraised or retired position. The motors 46 and 47 and hence, the pump Hmay be controlled through the switch 52. It will be observed that 'anormally closed limit switch 53 is provided to prevent damage as mayresult should the housing B be moved to close the chuck assembly D. Atwo-pole circuit breaker and twopole contactor are indicated at 50a and50b.

The chuck assembly D includes a pair of spaced aligned chucks 60 and 61,and a gear 62 therebetween. As illustrated, the chuck 60 with integralgear 62 is a No. 141 chuck assembly. The chuck 61 is the same assemblywith its gear removed and turned 180 and integrally joined as by weldingto the first mentioned gear 62. It is important that the chuck assemblyD be thus capable of supporting a workpiece at two points and be driventherebetween.

A drive shaft J has gear means 56 connecting it to the power take-offgears 57 of the assembly I. The drive shaft J has portions 70 and 71joined by a shear coupling 72. The shaft has bearings 73. An auxiliaryshaft portion 74 carries a gear 75 for driving the gear 62 of the chuckassembly D7 The shaft J is carried beneath the horizontal plane of themotors as illustrated.

While a preferred embodiment of the invention has been described usingspecific terms, such description is for illustrative purposes only, andit is to be understood that changes and variations may be made withoutdeparting from the spirit or scope of the following claims:

What is claimed is:

l. A portable power tool assembly for pipe working and the likecomprising. in combination: a platform; a double chuck assembly carriedby said platform above an upper surface of the platform; a power drivingassembly carried by said platform below said upper surface of theplatform in longitudinal alignment with and spaced from said chuckassembly; a drive shaft; means connecting said power driving assembly tosaid shaft, said driving assembly including a pair of motorstransversely aligned in substantially the same horizontal plane. saiddrive shaft being longitudinally aligned between and positioned beneathsaid motors; means connecting said drive shaft to said chuck assemblyfor driving said chuck assembly; a cutting die assembly carried by saidplatform in longitudinal and vertical alignment between said chuckassembly and said power driving assembly; said cutting die assemblyincluding a housing; means carrying said housing for moving said housingtransversely forwardly and rearwardly on said platform; and longitudinalsupport means carrying said housing for moving said housinglongitudinally on said platform.

2. The power-connected tool assembly set forth in claim I. wherein saidchuck assembly comprises a pair of longitudinally spaced and alignedchucks each fixedly connected directly to a driving gear positionedtherebetween.

1. A portable power tool assembly for pipe working and the likecomprising, in combination: a platform; a double chuck assembly carriedby said platform above an upper surface of the platform; a power drivingassembly carried by said platform below said upper surface of theplatform in longitudinal alignment with and spaced from said chuckassembly; a drive shaft; means connecting said power driving assembly tosaid shaft, said driving assembly including a pair of motorstransversely aligned in substantially the same horizontal plane, saiddrive shaft being longitudinally aligned between and positioned beneathsaid motors; means connecting said drive shaft to said chuck assemblyfor driving said chuck assembly; a cutting die assembly carried by saidplatform in longitudinal and vertical alignment between said chuckassembly and said power driving assembly; said cutting die assemblyincluding a housing; means carrying said housing for moving said housingtransveRsely forwardly and rearwardly on said platform; and longitudinalsupport means carrying said housing for moving said housinglongitudinally on said platform.
 2. The power-connected tool assemblyset forth in claim 1, wherein said chuck assembly comprises a pair oflongitudinally spaced and aligned chucks each fixedly connected directlyto a driving gear positioned therebetween.